Square Roots
What is the √841
29
Solve 42
16
Solve 52 + √ 9
25+3=28
Where is the mistake? What is the correct answer?
√100=50
it equals 10
Solve. √0.49=?
0.7
Solve √121 + √361
11+19=30
162 + 242 =
256+576=832
42 - √289=
4*4 - 17
16-17
-1
Where is the mistake? What is the correct answer?
232 - √841=
S1: 529 - 28 =
S2: 501
Step 1; the √841= 29
529 - 29 =
500
EXPLAIN the difference between:
(-6)2 and -62
(-6)2 is -6*-6= 36
and
-62 is -6 *6= -36
Simplify this fraction √196 / √225
√196 is the numerator
√225 is the denominator
14/15
42 - 62 =
4*4 - 6*6 =
16 - 36 =
-20
Solve 132 / √225
numerator is 132
denominator is √225
numerator 13*13 / denominator 15
169/15
Where is the mistake? What is the correct answer?
√576 / 122
S1: 24 / 12*2
S2: 24 / 24
S3: 1
Step 1; they multiplied 12*2
Denominator should be 12*12
24 / 144
EXPLAIN the difference between:
(-21)2 and -212
(-21)2 is -21*-21= 441
and
-212 is - 21*21 = -441
Solve 8√625
8*25=200
Simplify this fraction 182 / 212
182 is the numerator
212 is the denominator
18*18 / 21*21 =
324/441
Simplify 10√400 - 302
10*20 - 30*30
200-900
-700
Where is the mistake? What is the correct answer?
14√64 - 302
S1: 14*8 - 900
S2: 112 - 900
S3: 788
Step 3 the answer should be -788
Solve √0.81 + √0.49
0.9 - 0.7
0.2
Solve 9√841 - √121
9*29 - 11 = 250
4(52) - 32 =
4(25) - 9 =
100 - 9 =
91
52 + 102 - 8√400 =
5*5 + 10*10 - 8*20
25+100 - 160
125 - 160
-35
Where is the mistake? What is the correct answer?
S1: 32 + 102 - 2√36 =
S2: 6 + 100 - 2(6) =
S3: 106 - 12 =
S4: 94
Step 2; they multiplied 3*2
S2: 9 + 100 - 2(6) =
S3: 109 - 12 =
S4: 97
Solve 162 + 12 - 8√49 =
256 + 1 - 3*7
257 - 21
236